/Engine/Source/Runtime/MovieSceneTracks/Public/Tracks/MovieSceneAudioTrack.h
Adds a new sound cue to the audio
virtual [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) * AddNewSoundOnRow ( [USoundBase](API\Runtime\Engine\Sound\USoundBase) * Sound, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) Time, int32 RowIndex )